BELOW IS MY CODE. This code is working, but I want to get the value of the display image in array to test, if the display country is correct. Please help me . I'm stuck in this activity. Thanks for all help .
public class MainActivity extends Activity implements OnClickListener {
private boolean blocked = false;
private Handler handler = new Handler();
ViewFlipper flippy;
Button show;
TextView view;
int flags[] = { R.drawable.afghan, R.drawable.albania, R.drawable.algeria };
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.flipper);
flippy = (ViewFlipper) findViewById(R.id.viewFlipper1);
show = (Button) findViewById(R.id.button1);
view = (TextView) findViewById(R.id.textView1);
for (int i = 0; i < flags.length; i++) {
setflipperimage(flags[i]);
}
}
private void setflipperimage(int i) {
// TODO Auto-generated method stub
Log.i("Set Filpper Called", i + "");
ImageView image = new ImageView(getApplicationContext());
image.setBackgroundResource(i);
flippy.addView(image);
}
do not call this in loop,use this on click or on touch:
i+=1;
flippy.setDisplayedChild(flags[0]);
This will get used to get the current child id
viewFlipper.getDisplayedChild();
Related
Hello as the title state I'm trying to setup a next and previous buttons but I'm still new at coding so this has me a little confused.
I tried to use if statements with an enum within a single button but it defaults to last if statement when the event is handled here's the code-
private enum EVENT{
pe1, pe2, pe3, pe4;
}
EVENT currentEvent = EVENT.pe1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_one_liners);
nextBtn = (Button) findViewById(R.id.nextBtn);
olText = (TextView) findViewById(R.id.olText);
nextBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (currentEvent==EVENT.pe1) {
olText.setText("PE1");
olText.startAnimation(AnimationUtils.loadAnimation(olText.this, android.R.anim.slide_in_left));
currentEvent=EVENT.pe2;
}
if (currentEvent==EVENT.pe2){
olText.setText("PE2");
olText.startAnimation(AnimationUtils.loadAnimation(olText.this, android.R.anim.slide_in_left));
currentEvent=EVENT.pe3;
}
}
});
}
I tried to use the enumerator to assign a number to each if statement so when the user hit previous it would subtract and when they hit next it would add, each number would have some text or image within its if statement but as I said it defaults to the last if statement- Any help is much appreciated.
How about this?
int eventNum = 0;
int maxEvents = XXX;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_one_liners);
prevBtn = (Button) findViewById(R.id.prevBtn);
nextBtn = (Button) findViewById(R.id.nextBtn);
olText = (TextView) findViewById(R.id.olText);
setEventData(true);
View.OnClickListener listener = new View.OnClickListener() {
#Override
public void onClick(View v) {
if(v.equals(prevBtn) && eventNum > 0) {
eventNum--;
setEventData(false);
return;
}
if(v.equals(nextBtn) && eventNum < maxEvents - 1) {
eventNum++;
setEventData(true);
return;
}
}
}
nextBtn.setOnClickListener(listener);
prevBtn.setOnClickListener(listener);
}
private void setEventData(boolean animLeft) {
olText.setText("PE" + (eventNum + 1));
if(animLeft) {
olText.startAnimation(AnimationUtils.loadAnimation(olText.this, android.R.anim.slide_in_left));
} else {
olText.startAnimation(AnimationUtils.loadAnimation(olText.this, android.R.anim.slide_in_right));
}
}
You'll want to create a class variable that keeps track of which text your TextView is showing. So in the following example, I create a list of Strings that I just store in a String array. Then I create an iterator variable which stores which String from the list I'm currently viewing in the TextView. Every time you click the previous or next button, you simply store your current state in the iterator variable so you can recall it the next time a click event comes in.
String[] labels = {"one", "two", "three", "four"};
int currentView = 0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void onPreviousButtonClicked(View view) {
TextView textView = (TextView) findViewById(R.id.clickableLink);
currentView--; //decrement our iterator
if(currentView < 0) currentView = 0; //check to make sure we didn't go below zero
textView.setText(labels[currentView]);
}
public void onNextButtonClicked(View view) {
TextView textView = (TextView) findViewById(R.id.clickableLink);
currentView++; //increment our iterator
if(currentView > labels.length-1) currentView = labels.length-1; //check to make sure we didn't go outside the array
textView.setText(labels[currentView]);
}
Ok i am developing a cows and bulls game, i am confused how to print messages to the user, i dont want to use dialogs or toasts! As far as i know, the only way is to update textviews , is that the only other option? or can i use something else to display stuff on the screen?
my code till now :
public class Play extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.play);
CowsNBulls();
}
private void CowsNBulls() {
// TODO Auto-generated method stub
int target=0;
final String targetStr = target +"";
boolean guessed= false;
final int guess;
final String Sguess;
System.out.print("Guess a 4-digit number with no duplicate digits");
EditText guess1 = (EditText)findViewById(R.id.etGuess);
Sguess=guess1.getText().toString();
Button ent = (Button) findViewById(R.id.bEnter);
guess= Integer.parseInt(Sguess);
ent.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
int guesses=0;
int bulls=0;
int cows=0;
if(hasDupes(guess)||guess < 1000){
guesses++;
String guessStr = guess + "";
for(int i= 0;i < 4;i++){
if(guessStr.charAt(i) == targetStr.charAt(i)){
bulls++;
}else if(targetStr.contains(guessStr.charAt(i)+"")){
cows++;
}}}}});
any ideas?
TextView or EditText will be your only possibility. You'd have to attach it to the Layout and maybe even wrap it in a ScrollView to make room for enough statements.
I am writing a program that when the user enter a number text appears according to that number. My problem is that the button line has public void ... after this I am trying to use if statements and return methods, but because of the public void, the return method can not return anything. I tried to close the public void, but I am getting errors. Please help.
The code is as follows. I have included the different codes that I have tried like toast, etc..
ente#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button button = (Button)findViewById(R.id.go);
button.setOnClickListener(mAddListener);
// tv = (TextView) findViewById(R.id.textView1);
}
private OnClickListener mAddListener = new OnClickListener()
{
public void onClick(View v) {
}}
;
//Toast.makeText(Num.this, "This Display", Toast.LENGTH_SHORT).show();
//toast.show();
//finish ();
// long id = 0;
// try
{
PleaseEnter=(EditText)findViewById(R.id.PleaseEnter);
{
}
if (PleaseEnter.equals("1"))
// tv.setText("This is the display 1.");
return "This display";
// Context context = getApplicationContext();
// CharSequence text ="this display";
// int duration =Toast.LENGTH_LONG;
// Toast toast =Toast.makeText(context, text, duration);
// toast.show();
else if (PleaseEnter.equals("2"))
return;
//tv.setText("Dispaly 2");
You can define your own method at Activity level, such as:
private void onTextEdited(String content) {
// deal with the String
}
In the onClick method of your OnClickListener, you can call it such as:
public void onClick(View v) {
EditText myEditText = (EditText) findViewById(R.id.PleaseEnter);
onTextEdited(myEditText.getText().toString());
}
Can't work out a way to make an array of buttons in android.
This is the code I have tried but I'm getting a java.lang.NullPointerException.
private Button[] button = {(Button) findViewById(R.id.cGuess1),
(Button) findViewById(R.id.cGuess2),(Button)
findViewById(R.id.cGuess3),(Button) findViewById(R.id.cGuess4)};
Is this even possible?
EDIT:
Sorry everyone. Just realised my mistake!
I was trying to declare the array for my whole class and trying to get the views from the ids before onCreate so there was no setContentView(R.layout.game);
Sorry.
Since no one else posted actual code for a solution, here's a working snippet.
Button[] myButtons = null;
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
myButtons = new Button[]
{
(Button)findViewById(R.id.button1),
(Button)findViewById(R.id.button2),
(Button)findViewById(R.id.button3),
};
}
Just a guess as full code is not available here, have you called setContentView() before creating array.
Could you try
final Button[] button = {(Button) findViewById(R.id.cGuess1),
(Button) findViewById(R.id.cGuess2),(Button)
findViewById(R.id.cGuess3),(Button) findViewById(R.id.cGuess4)};
One of your buttons may be null. And putting a private keyword does not allow me to create the array. Also see that Firstly you are setting the cententView for your activity and then accessing these buttons.
public class main2 extends Activity{
final int[] button = {R.id.button1,R.id.button2,R.id.button3,R.id.button4,R.id.button5,
R.id.button6,R.id.button7,R.id.button8,R.id.button9,R.id.button10};
Button[] bt = new Button[button.length];
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.sign);
for(int i=0;i<button.length;i++){
final Context context = this;
final int b = i;
bt[b]= (Button) findViewById(button[b]);
Typeface font = Typeface.createFromAsset(getAssets(), "Angkor.ttf");
bt[b].setTypeface(font);
bt[b].setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent myIntent = new Intent(context,r1.class);
startActivity(myIntent);
}
});
}
}
}
Hi I'm kind of beginner to android OS programming, and I got stuck with a problem, I cant figure out how to do a dynamic background, based on timers (say each 10 seconds a background changes to a different one) I have some code but it comes up with error, here's a sample:
private static final long GET_DATA_INTERVAL = 10000;
int images[] = {R.drawable.smothie1,R.drawable.omletherb1};
int index = 0;
ImageView img;
Handler hand = new Handler();
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
this.setContentView(R.layout.main);
LinearLayout layout= (LinearLayout)findViewById(R.id.LinearView1);
hand.postDelayed(run, GET_DATA_INTERVAL);
}
Runnable run = new Runnable() {
public void run() {
layout.setBackgroundResource(LinearView1).getDrawable(images[index++]);
if (index == images.length)
index = 0;
hand.postDelayed(run, GET_DATA_INTERVAL);
Any help would be greatly apprieciated :D thanks
EDIT: The errors I get are on this line:
layout.setBackgroundResource(LinearView1).getDrawable(images[index++]);
It says that:
-layout cannot be resolved
-the method getDrawable(int) is undefined for the type Object
This error:
layout.setBackgroundResource(LinearView1).getDrawable(images[index++]);
It says that:
-layout cannot be resolved
-the method getDrawable(int) is undefined for the type Object
Please help :)
I have finally worked it out, after removing a few errors I have came up with this (and its working) :
public class CookBookActivity extends Activity {
/** Called when the activity is first created. */
private static final long GET_DATA_INTERVAL = 1000;
int images[] = {R.drawable.omletherb1,R.drawable.smothie1};
int index = 0;
LinearLayout img;
Handler hand = new Handler();
private LinearLayout layout;
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
this.setContentView(R.layout.main);
layout = (LinearLayout)findViewById(R.layout.main);
hand.postDelayed(run, GET_DATA_INTERVAL);
Typeface tf2 = Typeface.createFromAsset(getAssets(),
"fonts/BPreplay.otf");
TextView tv2 = (TextView) findViewById(R.id.textView2);
tv2.setTypeface(tf2);
Typeface tf = Typeface.createFromAsset(getAssets(),
"fonts/BPreplay.otf");
TextView tv = (TextView) findViewById(R.id.textView1);
tv.setTypeface(tf);
Button mainNext = (Button) findViewById(R.id.nextScreen1);
mainNext.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent i = new Intent();
i.setClassName("com.unKnown.cookbook", "com.unKnown.cookbook.screen1");
startActivity(i);
}
});
}
Runnable run = new Runnable() {
public void run() {
layout.setBackgroundDrawable(getDrawable(index++));
if (index == images.length)
index = 0;
hand.postDelayed(run, GET_DATA_INTERVAL);
}
};
protected Drawable getDrawable(int i) {
// TODO Auto-generated method stub
return getResources().getDrawable(images[i%2]);
}
}